Pyloric Size in Normal Infants and in Infants Suspected of Having Hypertrophic Pyloric Stenosis

Abstract

Pyloric muscle thickness (PMT) and pyloric diameter (PD) were determined by sonography in 92 healthy infants aged 8 to 70 days. PMT and PD measured median 2.0 mm and 10.0 mm. There was a significant correlation between the pyloric dimensions and the infant's age, p<0.02 and p<0.00001 for PMT and PD, respectively. In 26 infants with an initial diagnosis of hypertrophic pyloric stenosis (HPS), but with a final diagnosis of no HPS the mean figures were 2.4 and 11.0 mm, and in 21 infants with HPS, confirmed at surgery, the figures were 4.0 and 14.0. The pyloric dimensions in the 3 groups differed significantly. The larger-than-normal pyloric dimensions in the “no HPS” group suggest that some of these patients suffered from milder degrees of HPS.

Keywords

Pylorus stenosis —ultrasonography infants

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References

Anonymous: Is ultrasound really necessary for the diagnosis of hypertrophic pyloric stenosis? Lancet 2 (1988), 1146.

Blumhagen

J. D.

: The role of ultrasonography in the evaluation of vomiting in infants. Pediatr. Radiol. 16 (1986), 267.

Bourchier

Dawson

K. P.

Kennedy

J. C.

: Pyloric stenosis. A postoperative ultrasonic study. Aust. Paediatr. J. 21 (1985), 189.

de Bruyn

Kenney

I. J.

: Pediatric general abdomen. In: Abdominal and general ultrasound, p. 992. Edited by Cosgrove

Meire

Dewbury

. Churchill Livingstone, London 1993.

Deeg

K. H.

Zeilinger

Böwing

Brandl

: Sonographische Diagnose der hypertrophen Pylorusstenose im Kindersalter. Ultraschall 6 (1985), 320.

Haller

J. O.

Cohen

H. L.

: Hypertrophic pyloric stenosis. Diagnosis using US. Radiology 161 (1986), 335.

Kofoed

P. E. L.

Høst

Elle

Larsen

: Hypertrophic pyloric stenosis. Determination of muscle dimensions by ultrasound. Br. J. Radiol. 61 (1988), 19.

O'Keffe

F. N.

Stransberry

S. D.

Swischuk

L. E.

Hayden

C. K.

: Antropyloric muscle thickness at US in infants. What is normal? Radiology 178 (1991), 827.

Okorie

N. M.

Dickson

J. A. S.

Carver

R. A.

Steiner

G. M.

: What happens to the pylorus after pyloromyotomy? Arch. Dis. Child. 63 (1988), 1339.

10.

Olesen

Tjalve

Pedersen

J. F.

: Anvendeligheden af ultralydskanning ved diagnostik af infantil hypertrofisk pylorusstenose. (In Danish.) Ugeskr. Læger 150 (1988), 341.

11.

Rollins

M. D.

Shields

M. D.

Quinn

R. J. M.

Woolridge

M. A. W.

: Pyloric stenosis. Congenital or acquired? Arch. Dis. Child. 64 (1989), 138.

12.

Struck

Urbanek

: Über den Stellenwert der Sonographie in der Diagnostik der hypertrophen Pylorusstenose. Monatsschr. Kinderheilkd. 130 (1982), 840.

13.

Stunden

R. J.

LeQuesne

G. W.

Little

K. E. T.

: The improved ultrasound diagnosis of hypertrophic pyloric stenosis. Pediatr. Radiol. 16 (1986), 200.

14.

Westra

S. J.

Groot

C. J.

Smits

N. J.

Staalman

C. R.

: Hypertrophic pyloric stenosis. Use of pyloric volume measurement in early US diagnosis. Radiology 172 (1989), 615.